Welcome to Tester

This is the contest system for Tester. The contest has started. If you log in, you can start your timer at any point and compete for 168:00:00 hours.

Start & End Times

Flexible Start Time 2023-02-08 03:37 -
2024-02-08 05:00 CET
End time 2024-02-08 05:00 CET


The contest has not yet started. The problems will become available when the contest starts.


Ranked Pass/Fail

Participants are ranked by the number of solved problems, breaking ties by penalty (sum of time + 20 minutes per wrong submission, for all solved problems). Time is rounded to minutes.


  • Standings are shown without limitation.


APL Bash C C# C++ COBOL Common Lisp Dart F# Fortran Gerbil Go Haskell Java JavaScript (Node.js) JavaScript (SpiderMonkey) Julia Kotlin Objective-C OCaml Pascal PHP Prolog Python 2 Python 3 Ruby Rust Swift TypeScript Visual Basic Zig